JP2014029137A - Intake manifold - Google Patents

Intake manifold Download PDF

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Publication number
JP2014029137A
JP2014029137A JP2012170032A JP2012170032A JP2014029137A JP 2014029137 A JP2014029137 A JP 2014029137A JP 2012170032 A JP2012170032 A JP 2012170032A JP 2012170032 A JP2012170032 A JP 2012170032A JP 2014029137 A JP2014029137 A JP 2014029137A
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Prior art keywords
dam
intake pipe
intake
convex portion
weir
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JP2012170032A
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JP6142477B2 (en
Inventor
Tomohisa Senda
智久 仙田
Hideaki Teramoto
秀章 寺本
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Aisin Corp
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Aisin Seiki Co Ltd
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Priority to JP2012170032A priority Critical patent/JP6142477B2/en
Priority to US13/942,842 priority patent/US9249765B2/en
Priority to EP13176664.4A priority patent/EP2693040B1/en
Priority to CN201320460564.4U priority patent/CN203412683U/en
Publication of JP2014029137A publication Critical patent/JP2014029137A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/06—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding lubricant vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10281—Means to remove, re-atomise or redistribute condensed fuel; Means to avoid fuel particles from separating from the mixture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10295—Damping means, e.g. tranquillising chamber to dampen air oscillations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

PROBLEM TO BE SOLVED: To distribute liquid water and oil occurring from a fluid to multiple introduction passages thereby inhibiting accidental fire of an engine and torque fluctuations.SOLUTION: In an intake manifold, an EGR distribution part 5 includes: a first introduction passage 14a, a second introduction passage 14b, and a third introduction passage 14c which respectively communicate with a first intake pipe 4a, a second intake pipe 4b, and a third intake pipe 4c; a first dam 15a, a second dam 15b, and a third dam 15c which are respectively oriented to the first introduction passage 14a, the second introduction passage 14b, and the third introduction passage 14c; and a fourth dam 15d positioned between the first dam 15a and the second dam 15b and a fifth dam 15e positioned between the second dam 15b and the third dam 15c.

Description

本発明は、インテークマニホールドに関するものである。   The present invention relates to an intake manifold.

従来、内燃機関の各々の気筒に対応する複数の吸気管と、吸気管に接続されるブローバイガス分配部と、を備えるインテークマニホールドであって、吸気管とブローバイガス分配部との導入路のうち少なくとも１つはブローバイガス分配部の底部に配置し、少なくとも１つはブローバイガス分配部の底部より上方に配置するインテークマニホールドが知られている（例えば、特許文献１参照）。   Conventionally, an intake manifold comprising a plurality of intake pipes corresponding to each cylinder of an internal combustion engine, and a blow-by gas distribution section connected to the intake pipe, wherein an intake passage between the intake pipe and the blow-by gas distribution section An intake manifold is known in which at least one is arranged at the bottom of the blow-by gas distribution part and at least one is arranged above the bottom of the blow-by gas distribution part (see, for example, Patent Document 1).

また、内燃機関の各々の気筒に対応する複数の吸気管と、吸気管に接続されるブローバイガス分配部と、を備えるインテークマニホールドであって、吸気管とブローバイガス分配部との導入路を有し、導入路の下面はブローバイガス分配部より吸気管に向かって下降傾斜し、ブローバイガス分配部の下端面は導入路の下端面より高い位置に配置するインテークマニホールドが知られている（例えば、特許文献２参照）。   The intake manifold includes a plurality of intake pipes corresponding to each cylinder of the internal combustion engine and a blow-by gas distribution unit connected to the intake pipe, and has an introduction path between the intake pipe and the blow-by gas distribution unit. An intake manifold is known in which the lower surface of the introduction passage is inclined downward from the blow-by gas distribution portion toward the intake pipe, and the lower end surface of the blow-by gas distribution portion is disposed at a position higher than the lower end surface of the introduction passage (for example, Patent Document 2).

特開２０１０−６５５７５号公報JP 2010-65575 A 特開２０１０−８４６４０号公報JP 2010-84640 A

しかしながら、特許文献１に示されるインテークマニホールドでは、ブローバイガスから発生する液状の水や油が、ブローバイガス分配部の底部に配置される導入路から一部の吸気管に流入することで、エンジンの失火、エンジンの気筒毎に出力トルクが異なるトルク変動が起きる虞がある。   However, in the intake manifold shown in Patent Document 1, liquid water or oil generated from blow-by gas flows into a part of the intake pipe from the introduction path arranged at the bottom of the blow-by gas distribution unit, so that the engine There is a risk of misfire and torque fluctuations with different output torques for each cylinder of the engine.

また、特許文献２に示されるインテークマニホールドでは、ブローバイガスから発生する液状の水や油が、ブローバイガス分配部に配置される導入路から一部の吸気管に流入することで、エンジンの失火、トルクの変動が起きる虞がある。   Moreover, in the intake manifold shown by patent document 2, the liquid water and oil which generate | occur | produce from blow-by gas flow into a part of intake pipes from the introduction path arrange | positioned at a blow-by gas distribution part, A misfire of an engine, Torque fluctuations may occur.

そこで、本発明は上記問題点に鑑みて成されたものであり、流体から発生する液状の水や油を複数の導入路に分配することで、エンジンの失火、トルクの変動を抑制することを課題とする。   Therefore, the present invention has been made in view of the above problems, and by distributing liquid water and oil generated from a fluid to a plurality of introduction paths, it is possible to suppress engine misfire and torque fluctuation. Let it be an issue.

本発明は、複数の吸気管と、複数の前記吸気管に接続して内部の流体を複数の前記吸気管に導く分配部と、前記分配部の前記内部には少なくとも複数の前記吸気管と同数設けられ、対応する前記吸気管に指向する第１凸部と、を備えた構成である。   The present invention includes a plurality of intake pipes, a distribution unit connected to the plurality of intake pipes to guide an internal fluid to the plurality of intake pipes, and at least the number of the plurality of intake pipes in the distribution unit. And a first protrusion directed to the corresponding intake pipe.

この構成によると、第１凸部を備えることで、流体から発生する液状の水や油が１つの吸気管に偏って流入することを抑制し、複数の吸気管に均等に分配することができる。   According to this configuration, by providing the first convex portion, it is possible to suppress liquid water and oil generated from the fluid from being biased and flow into one intake pipe, and to evenly distribute the plurality of intake pipes. .

本発明は、前記第１凸部は前記吸気管の長手方向に延在する構成である。   In the present invention, the first convex portion extends in the longitudinal direction of the intake pipe.

この構成によると、第１凸部は吸気管の長手方向に延在することで、流体から発生する水や油を各々の吸気管に向かってガイドし、流体から発生する水や油が１つの吸気管に偏って流入することをより抑制し、複数の吸気管に均等に分配することができる。 According to this configuration, the first convex portion extends in the longitudinal direction of the intake pipe to guide water and oil generated from the fluid toward each intake pipe, and one water or oil generated from the fluid is provided. It is possible to further suppress the inflow into the intake pipes and to distribute the intake pipes evenly.

本発明は、前記分配部は外部からの空気を複数の前記吸気管に導くサージタンクとは別に設けられ、前記空気とは別の前記流体が内部に流入して複数の前記吸気管に導く拡張室であり、前記拡張室に前記第１凸部が設けられている構成である。   In the present invention, the distribution unit is provided separately from a surge tank that guides air from outside to the plurality of intake pipes, and the fluid different from the air flows into the interior and leads to the plurality of intake pipes It is a room and the 1st convex part is provided in the expansion room.

この構成によると、第１凸部を備えることで、ＥＧＲガスやブローバイガスなどの吸気側に還流する流体から発生する液状の水や油が１つの吸気管に偏って流入することを抑制し、複数の吸気管に分配することができる。   According to this configuration, by providing the first convex portion, the liquid water and oil generated from the fluid recirculating to the intake side such as EGR gas or blow-by gas is suppressed from flowing in one intake pipe, It can be distributed to a plurality of intake pipes.

本発明は、前記拡張室には複数の前記吸気管と連通する導入路を備え、前記第１凸部は前記導入路に向けて延在している構成である。   According to the present invention, the expansion chamber includes an introduction path that communicates with the plurality of intake pipes, and the first convex portion extends toward the introduction path.

この構成によると、導入路を備え、第１凸部は導入路に向けて延在することで、ＥＧＲガスやブローバイガスなどの吸気側に還流する流体から発生する液状の水や油を各々の導入路に向かってガイドし、ＥＧＲガスやブローバイガスなどの吸気側に還流する流体から発生する液状の水や油が１つの導入路に偏って流入することをより抑制し、複数の吸気管に均等に分配することができる。 According to this configuration, the introduction path is provided, and the first convex portion extends toward the introduction path, so that liquid water and oil generated from the fluid returning to the intake side, such as EGR gas and blow-by gas, are supplied to each Guides toward the introduction path, and further suppresses liquid water and oil generated from the fluid returning to the intake side, such as EGR gas and blow-by gas , from flowing in a single introduction path, and flows into a plurality of intake pipes. Can be distributed evenly.

本発明は、前記分配部は前記流体である外部からの空気を複数の前記吸気管に導くサージタンクであり、前記サージタンクに前記第１凸部が設けられる構成である。   In the present invention, the distribution unit is a surge tank that guides air from the outside as the fluid to the plurality of intake pipes, and the surge tank is provided with the first convex portion.

この構成によると、第１凸部を備えることで、外部からの空気から発生する水や油を各々の吸気管に向かってガイドし、流体から発生する水や油が１つの吸気管に偏って流入することを抑制し、複数の吸気管に分配することができる。 According to this configuration, by providing the first convex portion, water and oil generated from the air from the outside are guided toward each intake pipe, and the water and oil generated from the fluid are biased to one intake pipe. Inflow can be suppressed and distributed to a plurality of intake pipes.

本発明は、前記第１凸部は、前記分配部の内面のうち最も重力方向下方側の部分から延在している構成である。   In the present invention, the first convex portion extends from a portion of the inner surface of the distribution portion that is on the lowest side in the gravitational direction.

この構成によると、分配部の内面のうち最も重力方向下方側に溜まる液状の水や油が１つの吸気管に偏って流入することを抑制し、複数の吸気管に分配することができる。   According to this configuration, it is possible to suppress the liquid water or oil that accumulates most on the lower side in the gravity direction among the inner surface of the distribution unit from flowing in one intake pipe and distribute it to a plurality of intake pipes.

本発明は、前記第１凸部と隣り合う前記第１凸部との間には第２凸部を備えた構成である。   The present invention has a configuration in which a second convex portion is provided between the first convex portion and the adjacent first convex portion.

この構成によると、第１凸部に加えて第２凸部を有することで前記分配部の内面のうち最も重力方向下方側の部分をより細かく区画することができ、第２凸部により流体から発生する液状の水や油が１つの吸気管に偏って流入することをさらに抑制し、複数の吸気管にさらに均等に分配することができる。 According to this configuration, by having the second convex portion in addition to the first convex portion, it is possible to more finely divide the portion of the inner surface of the distribution portion that is on the lowermost side in the gravitational direction, from the fluid by the second convex portion. It is possible to further prevent the generated liquid water or oil from flowing unevenly into one intake pipe, and to evenly distribute the plurality of intake pipes.

本発明は、前記凸部は前記流体の流通方向の上流側よりも下流側が先細る構成である。   In the present invention, the convex portion is configured such that the downstream side is tapered from the upstream side in the fluid flow direction.

この構成によると、凸部が溶着されるとき、凸部が溶着の抵抗となったり溶着バリとなって製品不良となるのを抑制できる。   According to this structure, when a convex part is welded, it can suppress that a convex part becomes a resistance of welding or it becomes a welding burr | flash, and becomes a product defect.

本発明の実施形態に係るインテークマニホールドの斜視図である。It is a perspective view of the intake manifold which concerns on embodiment of this invention. 本発明の実施形態に係るインテークマニホールドの部分拡大図である。It is the elements on larger scale of the intake manifold which concerns on embodiment of this invention. 本発明の実施形態に係るＥＧＲ分配部の部分拡大図である。It is the elements on larger scale of the EGR distribution part which concerns on embodiment of this invention. 本発明の実施形態に係る堰がある部分のインテークマニホールドの部分断面図である。It is a fragmentary sectional view of the intake manifold of a portion with a weir according to an embodiment of the present invention. 本発明の実施形態に係る堰がない部分インテークマニホールドの部分断面図である。It is a fragmentary sectional view of the partial intake manifold which does not have a weir concerning the embodiment of the present invention. 本発明の第１変形例に係るＥＧＲ分配部の部分拡大図である。It is the elements on larger scale of the EGR distribution part which concerns on the 1st modification of this invention. 本発明の第２変形例に係るサージタンクの部分断面図である。It is a fragmentary sectional view of the surge tank concerning the 2nd modification of the present invention.

以下、本発明の実施形態の構成について説明する。   The configuration of the embodiment of the present invention will be described below.

図１〜５に従って本発明の実施形態に係るインテークマニホールド１について説明する。   An intake manifold 1 according to an embodiment of the present invention will be described with reference to FIGS.

図１において、インテークマニホールド１は、図示しない吸気流路と接続される第１フランジ２と、第１フランジ２と接続され流入する空気を一時的に蓄えるサージタンク３と、サージタンク３に接続される第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃと、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃの湾曲部外周面に接続してＥＧＲガスを第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃに導くＥＧＲ分配部５と、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃと図示しないエンジンとを接続する第２フランジ６と、から構成される。   In FIG. 1, an intake manifold 1 is connected to a first flange 2 that is connected to an intake passage (not shown), a surge tank 3 that is connected to the first flange 2 and temporarily stores inflowing air, and a surge tank 3. The first intake pipe 4a, the second intake pipe 4b, the third intake pipe 4c, the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c are connected to the outer peripheral surfaces of the curved portions of the EGR gas. A first intake pipe 4a, a second intake pipe 4b, an EGR distributor 5 that leads to the third intake pipe 4c, a first intake pipe 4a, a second intake pipe 4b, a third intake pipe 4c, and an engine (not shown) are connected. 2 flanges 6.

図２、３において、ＥＧＲ分配部５は、ＥＧＲガスを図示しないエキゾーストマニホールドより供給される連通管１１と、連通管１１と接続されるハウジング１２と、ハウジング１２と溶着され第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃの湾曲部外周面（吸気管の上側）に接続される受け皿１３と、から構成される。ＥＧＲ分配部５は、ハウジング溶着部１２ａ（図４参照）と受け皿溶着部１３ａとを溶着して形成される。   2 and 3, the EGR distribution unit 5 includes a communication pipe 11 for supplying EGR gas from an exhaust manifold (not shown), a housing 12 connected to the communication pipe 11, a housing 12 connected to the housing 12, and a first intake pipe 4a. It is comprised from the saucer 13 connected to the curved part outer peripheral surface (upper side of an intake pipe) of the 2nd intake pipe 4b and the 3rd intake pipe 4c. The EGR distribution part 5 is formed by welding a housing weld part 12a (see FIG. 4) and a tray weld part 13a.

受け皿１３は、各々第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに連通する第１導入路１４ａと第２導入路１４ｂと第３導入路１４ｃとを備え、各々第１導入路１４ａと第２導入路１４ｂと第３導入路１４ｃに指向する第１堰１５ａ（第１凸部）と第２堰１５ｂ（第１凸部）と第３堰１５ｃ（第１凸部）とを備え、さらには第１堰１５ａと第２堰１５ｂとの間に第４堰１５ｄ（第２凸部）と第２堰１５ｂと第３堰１５ｃとの間に第５堰１５ｅ（第２凸部）とを備える。   The tray 13 includes a first introduction path 14a, a second introduction path 14b, and a third introduction path 14c that communicate with the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c, respectively. A first weir 15a (first convex portion), a second weir 15b (first convex portion), and a third weir 15c (first convex portion) directed to the introduction passage 14a, the second introduction passage 14b, and the third introduction passage 14c. Furthermore, a fifth weir 15e (second dam) is provided between the first dam 15a and the second dam 15b, the fourth dam 15d (second convex portion), the second dam 15b and the third dam 15c. Convex portion).

言い換えると、第１堰１５ａは第１導入路１４ａの中心に、第２堰１５ｂは第２導入路１４ｂの中心に、第３堰１５ｃは第３導入路１４ｃの中心に向かって延在し、流体を第１導入路１４ａと第２導入路１４ｂと第３導入路１４ｃへガイドする形状となっている。 In other words, the first weir 15a extends toward the center of the first introduction path 14a, the second weir 15b extends toward the center of the second introduction path 14b, and the third weir 15c extends toward the center of the third introduction path 14c, The fluid is guided to the first introduction path 14a, the second introduction path 14b, and the third introduction path 14c .

また、第１堰１５ａと第２堰１５ｂと第３堰１５ｃと第４堰１５ｄと第５堰１５ｅは、受け皿１３の内面のうち最も重力方向下方側（サージタンク３側）の受け皿溶着部１３ａから、第１導入路１４ａと第２導入路１４ｂと第３導入路１４ｃ方向であって、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃの長手方向（流体の流れ方向）に向かって延在している。また、第１堰１５ａと第２堰１５ｂと第３堰１５ｃと第４堰１５ｄと第５堰１５ｅは、受け皿１３の内面のうち最も重力方向下方側（サージタンク３側）の受け皿溶着部１３ａから、溶着されるハウジング１２方向に向かって延在している。さらに、第１堰１５ａと第２堰１５ｂと第３堰１５ｃと第４堰１５ｄと第５堰１５ｅは延在する方向に向かって先細る形状である。   Further, the first dam 15a, the second dam 15b, the third dam 15c, the fourth dam 15d, and the fifth dam 15e are the tray welds 13a on the lower side in the gravitational direction (surge tank 3 side) of the inner surface of the tray 13. From the first introduction path 14a, the second introduction path 14b, and the third introduction path 14c, the longitudinal direction of the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c (fluid flow direction). Extends towards. Further, the first dam 15a, the second dam 15b, the third dam 15c, the fourth dam 15d, and the fifth dam 15e are the tray welds 13a on the lower side in the gravitational direction (surge tank 3 side) of the inner surface of the tray 13. To the housing 12 to be welded. Furthermore, the first dam 15a, the second dam 15b, the third dam 15c, the fourth dam 15d, and the fifth dam 15e are tapered toward the extending direction.

図４は第２堰１５ｂがある部分のインテークマニホールド１の部分断面図で、ハウジング１２と第２堰１５ｂ（図示はないが第１堰１５ａと第３堰１５ｃと第４堰１５ｄと第５堰１５ｅも同様である）とが溶着されて、ハウジング溶着部１２ａと第２堰１５ｂは密着する。
図５は堰がない部分のインテークマニホールド１の部分断面図で、ハウジング溶着部１２ａと受け皿溶着部１３ａのみが溶着されて空間１６が形成される。 FIG. 4 is a partial cross-sectional view of the intake manifold 1 where the second weir 15b is located. The housing 12 and the second weir 15b (not shown, the first weir 15a, the third weir 15c, the fourth weir 15d, and the fifth weir) are shown. 15e is also welded), and the welded portion 12a of the housing and the second weir 15b are in close contact with each other.
FIG. 5 is a partial cross-sectional view of the intake manifold 1 where there is no weir. Only the housing welded portion 12a and the tray welded portion 13a are welded to form a space 16.

第１堰１５ａと第２堰１５ｂと第３堰１５ｃと第４堰１５ｄと第５堰１５ｅとを有さず、ハウジング溶着部１２ａと受け皿溶着部１３ａのみが溶着される部分は空間を形成し、第１堰１５ａと第４堰１５ｄ、第４堰１５ｄと第２堰１５ｂ、第２堰１５ｂと第５堰１５ｅ、第５堰１５ｅと第３堰１５ｃとの間にできる空間を空間１６とする。この空間１６は、ハウジング１２と受け皿１３とを接合したＥＧＲ分配部５の内部のうち最も重力方向下方側となる。   The first dam 15a, the second dam 15b, the third dam 15c, the fourth dam 15d, and the fifth dam 15e are not provided, and the portion where only the housing welded portion 12a and the tray welded portion 13a are welded forms a space. The space formed between the first dam 15a and the fourth dam 15d, the fourth dam 15d and the second dam 15b, the second dam 15b and the fifth dam 15e, and the fifth dam 15e and the third dam 15c To do. This space 16 is the lowermost side in the gravitational direction within the EGR distributor 5 where the housing 12 and the tray 13 are joined.

本発明の実施形態の動作について説明する。   The operation of the embodiment of the present invention will be described.

図示しない吸気流路から流入する空気は、サージタンク３で一時的に蓄えられ、蓄えられた空気は、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに均等に分配され、分配された空気を図示しないエンジンに送り込む。   Air flowing from an intake passage (not shown) is temporarily stored in the surge tank 3, and the stored air is evenly distributed to the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c. Then, the distributed air is sent to an engine (not shown).

ＥＧＲガスは、図示しないエキゾーストマニホールド１よりＥＧＲ分配器５に連通管１１を介して送り込まれる。なお、ＥＧＲガスは本来、気体であるが、冷却されることで一部の水と油が液体となり、気体と液体が混合された状態でＥＧＲ分配器５に送り込まれる。また、ＥＧＲガスは、ＥＧＲ分配器５内でも冷却されることで一部の水と油が液体となる。   The EGR gas is sent from the exhaust manifold 1 (not shown) to the EGR distributor 5 through the communication pipe 11. In addition, although EGR gas is gas originally, a part of water and oil become liquid by being cooled, and it is sent into the EGR distributor 5 in a state where gas and liquid are mixed. In addition, the EGR gas is cooled in the EGR distributor 5 so that a part of water and oil become liquid.

ＥＧＲガスの内、気体のものは第１導入路１４ａと第２導入路１４ｂと第３導入路１４ｃとから第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに均等に分配されて、空気に混ざって図示しないエンジンに送り込まれる。   Of the EGR gas, gas is equally distributed from the first introduction path 14a, the second introduction path 14b, and the third introduction path 14c to the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c. Then, it is mixed with air and sent to an engine (not shown).

ＥＧＲガスの内、液体のものは、ＥＧＲ分配器５の内面を伝って重力方向下方に流れ落ちる。流れ落ちた液体は、ハウジング溶着部１２ａと受け皿溶着部１３ａとを溶着した際にできる空間１６に溜まる。溜まった液体はエンジンの振動、車両の加減速時や車両の旋回時のＧにより、力のかかる方向に移動する。しかしながら、第１堰１５ａと第２堰１５ｂと第３堰１５ｃと第４堰１５ｄと第５堰１５ｅがあるため、これらの堰を乗り越えて移動する必要があり、各々の堰の間の空間１６に液体が分配されながら溜まっていく。   Among the EGR gas, the liquid one flows down the gravity direction along the inner surface of the EGR distributor 5. The liquid that has flowed down accumulates in the space 16 formed when the housing welded portion 12a and the tray welded portion 13a are welded. The accumulated liquid moves in a direction in which a force is applied due to G of the vibration of the engine, acceleration / deceleration of the vehicle, or turning of the vehicle. However, since there are the first weir 15a, the second weir 15b, the third weir 15c, the fourth weir 15d, and the fifth weir 15e, it is necessary to move over these weirs, and the space 16 between each weir The liquid accumulates while being distributed.

空間１６に分配されて溜まった液体は、堰から溢れるまで溜まると第１導入路１４ａと第２導入路１４ｂと第３導入路１４ｃとから第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに均等に分配されて、空気や気体のＥＧＲガスに混ざって図示しないエンジンに送り込まれる。   When the liquid accumulated in the space 16 accumulates until it overflows from the weir, the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 14a, the second introduction path 14b, and the third introduction path 14c are collected. It is equally distributed to the intake pipe 4c and mixed with air or gaseous EGR gas and sent to an engine (not shown).

本発明の実施形態の効果について説明する。   The effect of the embodiment of the present invention will be described.

第１堰１５ａと第２堰１５ｂと第３堰１５ｃとを備えることで、ＥＧＲガスから発生する液体の水や油が１つの吸気管に偏って流入することを抑制し、複数の吸気管に分配することができる。   By providing the first weir 15a, the second weir 15b, and the third weir 15c, liquid water and oil generated from the EGR gas are prevented from flowing in one intake pipe, and the plurality of intake pipes are suppressed. Can be distributed.

なお、第１堰１５ａと第２堰１５ｂと第３堰１５ｃとが、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃの長手方向（流体の流れ方向）に延在することで、ＥＧＲガスから発生する液体の水や油を第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃに向かってガイドし、ＥＧＲガスから発生する水や油が１つの吸気管（例えば一番端の第１吸気管４ａまたは第３吸気管４ｃ）に偏って流入することをより抑制し、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに均等に分配することができる。 The first dam 15a, the second dam 15b, and the third dam 15c extend in the longitudinal direction (fluid flow direction) of the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c. The liquid water or oil generated from the EGR gas is guided toward the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c, and the water or oil generated from the EGR gas is supplied to one intake pipe ( For example, the first intake pipe 4a or the third intake pipe 4c at the extreme end is further prevented from flowing in an unbalanced manner, and is equally distributed to the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c. can do.

また、第１導入路１４ａと第２導入路１４ｂと第３導入路１４ｃを備え、第１堰１５ａと第２堰１５ｂと第３堰１５ｃは第１導入路１４ａと第２導入路１４ｂと第３導入路１４ｃに向けて延在することで、ＥＧＲガスから発生する液体の水や油を第１導入路１４ａと第２導入路１４ｂと第３導入路１４ｃに向かってガイドし、ＥＧＲガスから発生する水や油が１つの吸気管（例えば一番端の第１吸気管４ａまたは第３吸気管４ｃ）に偏って流入することをより抑制し、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに均等に分配することができる。 The first introduction path 14a, the second introduction path 14b, and the third introduction path 14c are provided, and the first dam 15a, the second dam 15b, and the third dam 15c are provided with the first introduction path 14a, the second introduction path 14b, and the second introduction path 14b. 3 By extending toward the introduction path 14c, liquid water or oil generated from the EGR gas is guided toward the first introduction path 14a, the second introduction path 14b, and the third introduction path 14c, and from the EGR gas The generated water and oil are further prevented from flowing in one intake pipe (for example, the first intake pipe 4a or the third intake pipe 4c at the extreme end), thereby suppressing the first intake pipe 4a and the second intake pipe 4b. And the third intake pipe 4c can be evenly distributed.

さらに、ＥＧＲ分配部５の内面のうち最も重力方向下方側である空間１６に溜まるＥＧＲガスから発生する液体の水や油が１つの吸気管（例えば一番端の第１吸気管４ａまたは第３吸気管４ｃ）に偏って流入することを抑制し、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに均等に分配することができる。   Further, liquid water or oil generated from the EGR gas that accumulates in the space 16 that is the lowermost in the direction of gravity of the inner surface of the EGR distributor 5 is supplied with one intake pipe (for example, the first intake pipe 4a at the end or the third intake pipe). Inflow to the intake pipe 4c) can be suppressed, and the intake pipe can be evenly distributed to the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c.

そして、第１堰１５ａと第２堰１５ｂとの間に第４堰１５ｄと第２堰１５ｂと第３堰１５ｃとの間に第５堰１５ｅを有することで、空間１６をより細かく区画することができ、第４堰１５ｄと第５堰１５ｅによりＥＧＲガスから発生する液体の水や油が１つの吸気管（例えば一番端の第１吸気管４ａまたは第３吸気管４ｃ）に偏って流入することをより抑制し、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに均等に分配することができる。 The space 16 is divided more finely by having the fifth weir 15e between the fourth weir 15d, the second weir 15b, and the third weir 15c between the first weir 15a and the second weir 15b. Liquid water or oil generated from EGR gas is biased into one intake pipe (for example, the first intake pipe 4a or the third intake pipe 4c at the extreme end) by the fourth weir 15d and the fifth weir 15e. This can be further suppressed and can be evenly distributed to the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c.

なお、第１堰１５ａと第２堰１５ｂと第３堰１５ｃと第４堰１５ｄと第５堰１５ｅは延在する方向に向かって先細る形状であるため、第１堰１５ａと第２堰１５ｂと第３堰１５ｃと第４堰１５ｄと第５堰１５ｅが溶着されるとき、第１堰１５ａと第２堰１５ｂと第３堰１５ｃと第４堰１５ｄと第５堰１５ｅが溶着の抵抗となったり溶着バリとなって製品不良となるのを抑制できる。   Since the first dam 15a, the second dam 15b, the third dam 15c, the fourth dam 15d, and the fifth dam 15e are tapered in the extending direction, the first dam 15a and the second dam 15b. And the third dam 15c, the fourth dam 15d, and the fifth dam 15e, the first dam 15a, the second dam 15b, the third dam 15c, the fourth dam 15d, and the fifth dam 15e It is possible to prevent the product from becoming defective due to welding or burr.

なお、エンジンの気筒数と吸気管の数は同様であり、本実施形態では図示しないエンジンが３気筒エンジンであるため、吸気管も３本である。   The number of cylinders of the engine and the number of intake pipes are the same. In this embodiment, the engine (not shown) is a three-cylinder engine, and thus there are three intake pipes.

また、本実施形態ではＥＧＲ分配部は吸気管の湾曲部外周面に位置しているが、吸気管の湾曲部内周面（吸気管の下側）に位置しても良い。   In the present embodiment, the EGR distribution portion is located on the outer peripheral surface of the curved portion of the intake pipe, but may be located on the inner peripheral surface of the curved portion of the intake pipe (below the intake pipe).

さらに、ＥＧＲ分配部はハウジング１２と受け皿１３とを溶着しているが、接着やガスケットを介在させてボルトで固定しても良い。   Furthermore, although the EGR distribution part welds the housing 12 and the tray 13, the EGR distribution part may be fixed with a bolt with an adhesive or a gasket interposed.

なお、本実施形態ではＥＧＲガスを分配するＥＧＲ分配部を例に挙げているが、同様の構造でブローバイガスを各々の吸気管に分配するブローバイガス分配部に用いてもよい。   In the present embodiment, an EGR distributor that distributes EGR gas is taken as an example. However, the blow-by gas may be used for a blow-by gas distributor that distributes blow-by gas to each intake pipe with the same structure.

（第１変形例）
以下、本発明の第１変形例の構成について説明する。図６は、本発明の第１変形例に係るＥＧＲ分配部５の部分拡大図である。図３に示す実施形態と異なる点は、実施形態の第１堰１５ａは受け皿溶着部１３ａからハウジング１２方向に向かって延在しているのに対して第１堰１５ｆは受け皿溶着部１３ａと同じ高さである。なお、図示していないが、第２堰と第３堰と第４堰と第５堰も同様の形状となる。 (First modification)
Hereinafter, the structure of the 1st modification of this invention is demonstrated. FIG. 6 is a partially enlarged view of the EGR distributor 5 according to the first modification of the present invention. The difference from the embodiment shown in FIG. 3 is that the first weir 15a of the embodiment extends from the saucer welded portion 13a toward the housing 12, whereas the first weir 15f is the same as the saucer welded portion 13a. It is height. Although not shown, the second weir, the third weir, the fourth weir, and the fifth weir have the same shape.

本発明の第１変形例の効果について説明する。第１変形例によると、第１堰と第２堰と第３堰と第４堰と第５堰がハウジング１２方向に延在しないため、溶着の抵抗となったり溶着バリとなって製品不良となるのをより抑制できる。   The effect of the 1st modification of this invention is demonstrated. According to the first modification, since the first dam, the second dam, the third dam, the fourth dam, and the fifth dam do not extend in the direction of the housing 12, it becomes a welding resistance or a welding burr, resulting in a product defect. It can be suppressed more.

（第２変形例）
以下、本発明の第２変形例の構成について説明する。図７は、本発明の第２変形例に係るサージタンク３ａの部分断面図である。 (Second modification)
The configuration of the second modification of the present invention will be described below. FIG. 7 is a partial cross-sectional view of a surge tank 3a according to a second modification of the present invention.

サージタンク３ａは、各々第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに連通し、各々各々第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃに指向する第１堰１７ａ（第１凸部）と第２堰１７ｂ（第１凸部）と第３堰１７ｃ（第１凸部）とを備え、さらには第１堰１７ａと第２堰１７ｂとの間に第４堰１７ｄ（第２凸部）と第２堰１７ｂと第３堰１７ｃとの間に第５堰１７ｅ（第２凸部）とを備える。   The surge tank 3a communicates with the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c, respectively, and is directed to the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c, respectively. 1st dam 17a (1st convex part), 2nd dam 17b (1st convex part), and 3rd dam 17c (1st convex part) are provided, Furthermore, between 1st dam 17a and 2nd dam 17b In addition, a fifth weir 17e (second convex portion) is provided between the fourth weir 17d (second convex portion), the second weir 17b, and the third weir 17c.

第１堰１７ａと第２堰１７ｂと第３堰１７ｃと第４堰１７ｄと第５堰１７ｅは、サージタンク３ａの内面のうち最も重力方向下方側から、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃ方向に向かって延在している。さらに、第１堰１７ａと第２堰１７ｂと第３堰１７ｃと第４堰１７ｄと第５堰１７ｅは延在する方向に向かって先細る形状である。   The first weir 17a, the second weir 17b, the third weir 17c, the fourth weir 17d, and the fifth weir 17e are the first intake pipe 4a and the second intake pipe from the bottom in the gravitational direction on the inner surface of the surge tank 3a. 4b and the 3rd intake pipe 4c direction are extended. Furthermore, the first dam 17a, the second dam 17b, the third dam 17c, the fourth dam 17d, and the fifth dam 17e are tapered in the extending direction.

本発明の第２変形例の効果について説明する。第２変形例によると、第１堰１７ａと第２堰１７ｂと第３堰１７ｃと第４堰１７ｄと第５堰１７ｅとを備えることで、図示しない吸気流路から流入する空気から発生する液体の水や油を第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃに向かってガイドし、吸気流路から流入する空気から発生する水や油が１つの吸気管に偏って流入することを抑制し、第１吸気管４ａと第２吸気管４ｂと第３吸気管４ｃとに均等に分配することができる。 The effect of the 2nd modification of this invention is demonstrated. According to the second modification, the first dam 17a, the second dam 17b, the third dam 17c, the fourth dam 17d, and the fifth dam 17e are provided, so that the liquid generated from the air flowing from the intake passage (not shown). Water and oil are guided toward the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c, and the water and oil generated from the air flowing in from the intake flow path is biased into one intake pipe. This can be suppressed, and can be equally distributed to the first intake pipe 4a, the second intake pipe 4b, and the third intake pipe 4c.

１ インテークマニホールド
４ａ 第１吸気管（吸気管）
４ｂ 第２吸気管（吸気管）
４ｃ 第３吸気管（吸気管）
５ ＥＧＲ分配部（分配部）
１４ａ 第１導入路（導入路）
１４ｂ 第２導入路（導入路）
１４ｃ 第３導入路（導入路）
１５ａ 第１堰（第１凸部）
１５ｂ 第２堰（第１凸部）
１５ｃ 第３堰（第１凸部）
１５ｅ 第４堰（第２凸部）
１５ｆ 第５堰（第２凸部） 1 Intake manifold 4a First intake pipe (intake pipe)
4b Second intake pipe (intake pipe)
4c Third intake pipe (intake pipe)
5 EGR distributor (distributor)
14a First introduction path (introduction path)
14b Second introduction path (introduction path)
14c Third introduction path (introduction path)
15a 1st weir (1st convex part)
15b 2nd weir (1st convex part)
15c 3rd weir (1st convex part)
15e 4th weir (2nd convex part)
15f 5th weir (2nd convex part)

Claims (8)

複数の吸気管と、
複数の前記吸気管に接続して内部の流体を複数の前記吸気管に導く分配部と、
前記分配部の前記内部には少なくとも複数の前記吸気管と同数設けられ、対応する前記吸気管に指向する第１凸部と、を備えたインテークマニホールド。 A plurality of intake pipes;
A distribution unit connected to the plurality of intake pipes to guide an internal fluid to the plurality of intake pipes;
An intake manifold provided with at least the same number of the intake pipes as the plurality of intake pipes in the distribution section, and first protrusions directed to the corresponding intake pipes. 前記第１凸部は前記吸気管の長手方向に延在する請求項１に記載のインテークマニホールド。   The intake manifold according to claim 1, wherein the first protrusion extends in a longitudinal direction of the intake pipe. 前記分配部は外部からの空気を複数の前記吸気管に導くサージタンクとは別に設けられ、前記空気とは別の前記流体が内部に流入して複数の前記吸気管に導く拡張室であり、
前記拡張室に前記第１凸部が設けられている請求項１または２に記載のインテークマニホールド。 The distribution unit is provided separately from a surge tank that guides air from the outside to the plurality of intake pipes, and is an expansion chamber in which the fluid different from the air flows into the interior and leads to the plurality of intake pipes,
The intake manifold according to claim 1, wherein the first convex portion is provided in the expansion chamber. 前記拡張室には複数の前記吸気管と連通する導入路を備え、
前記第１凸部は前期導入路に向けて延在している請求項３に記載のインテークマニホールド。 The expansion chamber includes an introduction path communicating with a plurality of the intake pipes,
The intake manifold according to claim 3, wherein the first convex portion extends toward the introduction path in the previous period. 前記分配部は前記流体である外部からの空気を複数の前記吸気管に導くサージタンクであり、
前記サージタンクに前記第１凸部が設けられる請求項１または２に記載のインテークマニホールド。 The distribution unit is a surge tank that guides air from the outside as the fluid to the plurality of intake pipes,
The intake manifold according to claim 1, wherein the first convex portion is provided in the surge tank. 前記第１凸部は、前記分配部の内面のうち最も重力方向下方側の部分から延在している請求項１〜５の何れかに記載のインテークマニホールド。   The intake manifold according to any one of claims 1 to 5, wherein the first convex portion extends from a portion of the inner surface of the distribution portion that is on the lowermost side in the gravitational direction. 前記第１凸部と隣り合う前記第１凸部との間には第２凸部を備えた請求項１〜６の何れかに記載のインテークマニホールド。   The intake manifold according to any one of claims 1 to 6, further comprising a second convex portion between the first convex portion and the adjacent first convex portion. 前記凸部は前記流体の流通方向の上流側よりも下流側が先細る請求項１〜７の何れかに記載のインテークマニホールド。   The intake manifold according to any one of claims 1 to 7, wherein the convex portion is tapered on the downstream side relative to the upstream side in the fluid flow direction.
JP2012170032A 2012-07-31 2012-07-31 Intake manifold Expired - Fee Related JP6142477B2 (en)

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